Data acquisition

Data acquisition and recording functions. More...

Topics
	Battery level constants
	Possible values for the battery field in bbt_device_data_block_t.
	EEG impedance/quality values
	Possible values for the impedance/quality of each channel of EEG.

Data Structures
struct	bbt_device_data_block_t
	The bbt_device_data_block_t class. More...

Functions
BBT_SDK_API int	bbt_device_start (bbt_device_t *device)
	Sets the device into acquisition mode.
BBT_SDK_API int	bbt_device_stop (bbt_device_t *device)
	Stops acquisition mode and enters configuration mode.
BBT_SDK_API int	bbt_device_is_acquiring (const bbt_device_t *device)
	Checks if the device is in acquisition mode.
BBT_SDK_API int	bbt_device_read (bbt_device_t *device, struct bbt_device_data_block_t *block)
	Read a data block from a device.

Detailed Description

Data acquisition and recording functions.

These functions manage the acquisition of the dats from the device. From configuration state, you can enter into acquisition state bt running bbt_device_start. To stop the acquisition and return to configuration state, call bbt_device_stop.

In acquisition state, the only accepted commands to the device are bbt_device_read and bbt_device_stop. No commands in the configuration group Configure the device are available.

Regarding connection, you can manage the connection/disconnection of the device during acquisition with bbt_device_is_connected and bbt_device_reconnect.

Function Documentation

bbt_device_start()

BBT_SDK_API int bbt_device_start

(

bbt_device_t *

device

)

Sets the device into acquisition mode.

The device enters into acquisition mode and starts streaming signals to the SDK that must be read with bbt_device_read and recording data into the SD Card if configured

Parameters

device

The handler to the device

Returns

True on success, false otherwise

bbt_device_stop()

BBT_SDK_API int bbt_device_stop

(

bbt_device_t *

device

)

Stops acquisition mode and enters configuration mode.

The device enters into aconfiguration mode and stop streaming signals and recording into SD Card.

Parameters

device

The handler to the device

Returns

True on success, false otherwise

bbt_device_is_acquiring()

BBT_SDK_API int bbt_device_is_acquiring

(

const bbt_device_t *

device

)

Checks if the device is in acquisition mode.

Parameters

device

The handler to the device

Returns

True if in acquisition mode. False otherwise

bbt_device_read()

BBT_SDK_API int bbt_device_read	(	bbt_device_t *	device,
		struct bbt_device_data_block_t *	block )

Read a data block from a device.

Fills the block data structure with the last information from the device

Parameters

device	The handler to the device
block	Output parameter to hold the information read

Returns

True on success, false otherwise